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org.eclipse.emf.query.ocl.conditions
Class BooleanOCLCondition<C,CLS,E>

java.lang.Object
  extended by 

org.eclipse.emf.query.conditions.Condition
      extended by 

org.eclipse.emf.query.conditions.eobjects.EObjectCondition
          extended by 

org.eclipse.emf.query.ocl.conditions.AbstractOCLCondition<C,CLS,E>
              extended by 
org.eclipse.emf.query.ocl.conditions.BooleanOCLCondition<C,CLS,E>

public class BooleanOCLCondition<C,CLS,E>
extends AbstractOCLCondition<C,CLS,E>

A specialized OCL condition class that is used to apply boolean-valued OCL expressions to EObjects. These are commonly used to express invariant constraints; they are not typically evaluated but are usually checked for isSatisfied(EObject).


Field Summary
 
Fields inherited from class org.eclipse.emf.query.conditions.eobjects. EObjectCondition
E_FALSE, E_TRUE
 
Fields inherited from class org.eclipse.emf.query.conditions. Condition
FALSE, TRUE
 
Constructor Summary
BooleanOCLCondition ( Environment<?, C,?,?,?,?,?,?,?,?, CLS, E> env, Query< C, CLS, E> oclQuery, C contextClassifier, IEStructuralFeatureValueGetter eStructuralFeatureValueGetter, PruneHandler pruneHandler)
          Initializes a constraint condition with an OCL expression string, a context classifier representing the type of "self" in the OCL expression, an IEStructuralFeatureValueGetter to use to resolve the context element for safe access to structural features, and a PruneHandler.NEVER to consult for pruning the content tree.
BooleanOCLCondition ( Environment<?, C,?,?,?,?,?,?,?,?, CLS, E> env, Query< C, CLS, E> oclQuery, C contextClassifier, PruneHandler pruneHandler)
          Initializes a constraint condition with an OCL expression string, a context classifier representing the type of "self" in the OCL expression, and a PruneHandler.NEVER to consult for pruning the content tree.
BooleanOCLCondition ( Environment<?, C,?,?,?,?,?,?,?,?, CLS, E> env, String oclExpressionString, C contextClassifier)
          Initializes a constraint condition with an OCL expression string and a context classifier representing the type of "self" in the OCL expression.
BooleanOCLCondition ( Environment<?, C,?,?,?,?,?,?,?,?, CLS, E> env, String oclExpressionString, C contextClassifier, IEStructuralFeatureValueGetter eStructuralFeatureValueGetter)
          Initializes a constraint condition with an OCL expression string, a context classifier representing the type of "self" in the OCL expression, and an IEStructuralFeatureValueGetter to use to resolve the context element for safe access to structural features.
BooleanOCLCondition ( Environment<?, C,?,?,?,?,?,?,?,?, CLS, E> env, String oclExpressionString, C contextClassifier, IEStructuralFeatureValueGetter eStructuralFeatureValueGetter, PruneHandler pruneHandler)
          Initializes a constraint condition with an OCL expression string, a context classifier representing the type of "self" in the OCL expression, an IEStructuralFeatureValueGetter to use to resolve the context element for safe access to structural features, and a PruneHandler.NEVER to consult for pruning the content tree.
 
Method Summary
 boolean isSatisfied ( EObject eObject)
          Computes the boolean value resulting from evaluating the constraint condition on the specified eObject.
 
Methods inherited from class org.eclipse.emf.query.ocl.conditions. AbstractOCLCondition
dispose, evaluate, getContextClassifier, getEStructuralFeatureValueGetter, getOCLQuery, getResultType, isContextFree, setEStructuralFeatureValueGetter
 
Methods inherited from class org.eclipse.emf.query.conditions.eobjects. EObjectCondition
AND, EQUIVALENT, getPruneHandler, IMPLIES, isSatisfied, OR, shouldPrune, XOR
 
Methods inherited from class org.eclipse.emf.query.conditions. Condition
AND, EQUIVALENT, IMPLIES, OR, XOR
 
Methods inherited from class java.lang. Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

BooleanOCLCondition

public BooleanOCLCondition(
Environment<?,
C,?,?,?,?,?,?,?,?,
CLS,
E> env,
                           
String oclExpressionString,
                           
C contextClassifier,
                           
IEStructuralFeatureValueGetter eStructuralFeatureValueGetter)
                    throws 
ParserException
Initializes a constraint condition with an OCL expression string, a context classifier representing the type of "self" in the OCL expression, and an IEStructuralFeatureValueGetter to use to resolve the context element for safe access to structural features. It defaults to using PruneHandler.NEVER to consult for pruning.

NOTE: if contextClassifier is null, then this becomes a context-free OCL condition.

Parameters:
env - an OCL environment in which to parse the expression. Must not be null
oclExpressionString - The OCL expression to apply when evaluating this OCLCondition
contextClassifier - The OCL context classifier. Use null to create a context-free condition.
eStructuralFeatureValueGetter - The strategy for accessing structural feature values. It serves as a layer of indirection to allow clients to intervene between this condition object and the way it extracts the structural features' values so as to allow for manipulation of such values before subjecting them to evaluation by the OCL interpreter.
Throws:
ParserException - on failure to parse the specified expression in the given classifier context, if this is not a context-free query

BooleanOCLCondition

public BooleanOCLCondition(
Environment<?,
C,?,?,?,?,?,?,?,?,
CLS,
E> env,
                           
String oclExpressionString,
                           
C contextClassifier)
                    throws 
ParserException
Initializes a constraint condition with an OCL expression string and a context classifier representing the type of "self" in the OCL expression. A default IEStructuralFeatureValueGetter is used to resolve the context element for safe access to structural features. It also defaults to using PruneHandler.NEVER to consult for pruning.

NOTE: if contextClassifier is null, then this becomes a context-free OCL condition.

Parameters:
env - an OCL environment in which to parse the expression. Must not be null
oclExpressionString - The OCL expression to apply when evaluating this OCLCondition
contextClassifier - The OCL context classifier. Use null to create a context-free condition.
Throws:
ParserException - on failure to parse the specified expression in the given classifier context, if this is not a context-free query

BooleanOCLCondition

public BooleanOCLCondition(
Environment<?,
C,?,?,?,?,?,?,?,?,
CLS,
E> env,
                           
String oclExpressionString,
                           
C contextClassifier,
                           
IEStructuralFeatureValueGetter eStructuralFeatureValueGetter,
                           
PruneHandler pruneHandler)
                    throws 
ParserException
Initializes a constraint condition with an OCL expression string, a context classifier representing the type of "self" in the OCL expression, an IEStructuralFeatureValueGetter to use to resolve the context element for safe access to structural features, and a PruneHandler.NEVER to consult for pruning the content tree.

NOTE: if contextClassifier is null, then this becomes a context-free OCL condition.

Parameters:
env - an OCL environment in which to parse the expression. Must not be null
oclExpressionString - The OCL expression to apply when evaluating this OCLCondition
contextClassifier - The OCL context classifier. Use null to create a context-free condition.
eStructuralFeatureValueGetter - The strategy for accessing structural feature values. It serves as a layer of indirection to allow clients to intervene between this condition object and the way it extracts the structural features' values so as to allow for manipulation of such values before subjecting them to evaluation by the OCL interpreter.
pruneHandler - The PruneHandler to consult when pruning
Throws:
ParserException - on failure to parse the specified expression in the given classifier context, if this is not a context-free query

BooleanOCLCondition

public BooleanOCLCondition(
Environment<?,
C,?,?,?,?,?,?,?,?,
CLS,
E> env,
                           
Query<
C,
CLS,
E> oclQuery,
                           
C contextClassifier,
                           
IEStructuralFeatureValueGetter eStructuralFeatureValueGetter,
                           
PruneHandler pruneHandler)
Initializes a constraint condition with an OCL expression string, a context classifier representing the type of "self" in the OCL expression, an IEStructuralFeatureValueGetter to use to resolve the context element for safe access to structural features, and a PruneHandler.NEVER to consult for pruning the content tree.

NOTE: if contextClassifier is null, then this becomes a context-free OCL condition.

Parameters:
env - the OCL environment in which the OCL query was parsed. Must not be null
oclQuery - The OCL query to apply when evaluating this condition
contextClassifier - The OCL context classifier. Must not be null
eStructuralFeatureValueGetter - The strategy for accessing structural feature values. It serves as a layer of indirection to allow clients to intervene between this condition object and the way it extracts the structural features' values so as to allow for manipulation of such values before subjecting them to evaluation by the OCL interpreter.
pruneHandler - The PruneHandler to consult when pruning
Throws:
ParserException - on failure to parse the specified expression in the given classifier context, if this is not a context-free query

BooleanOCLCondition

public BooleanOCLCondition(
Environment<?,
C,?,?,?,?,?,?,?,?,
CLS,
E> env,
                           
Query<
C,
CLS,
E> oclQuery,
                           
C contextClassifier,
                           
PruneHandler pruneHandler)
Initializes a constraint condition with an OCL expression string, a context classifier representing the type of "self" in the OCL expression, and a PruneHandler.NEVER to consult for pruning the content tree.

NOTE: if contextClassifier is null, then this becomes a context-free OCL condition.

Parameters:
env - the OCL environment in which the OCL query was parsed. Must not be null
oclQuery - The OCL query to apply when evaluating this condition
contextClassifier - The OCL context classifier. Must not be null
pruneHandler - The PruneHandler to consult when pruning
Throws:
ParserException - on failure to parse the specified expression in the given classifier context, if this is not a context-free query
Method Detail

isSatisfied

public boolean isSatisfied(
EObject eObject)
Computes the boolean value resulting from evaluating the constraint condition on the specified eObject.

Overrides:
isSatisfied in class AbstractOCLCondition< C, CLS, E>
Parameters:
eObject - the EObject to check
Returns:
boolean true if the argument eObject satisfies this EObjectCondition
See Also:
AbstractOCLCondition.getContextClassifier(), AbstractOCLCondition.isContextFree()

Copyright 2002, 2007 IBM Corporation and others.
All Rights Reserved.


 
 
  Published under the terms of the Eclipse Public License Version 1.0 ("EPL") Design by Interspire